Stave-jointing machine



(No Model.) 2 Sheets-Sheet 1.

E. & B. HOLMES.

\ STAVE JOINTING MACHINE.

1 No. 415,461. Patented Nov. 19, 1889.

Inventors.

(No Model.) 2 Sheets-Sheet 2. E. 81; B. HOLMES.

STAVE JOINTING MACHINE.

No. 415,461. Patented Nov. 19, 1889.

Inventors. $11M Ma (206M011 W N PETERS. Pholo-Lflbogmphcr, WuhingKOlI-D c.

UNITED STATES PATENT OFFICE.

EDVARD HOLMES'AND BRITAIN HOLMES, OF BUFFALO, NEIV YORK.

STAVE-JOINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 415,461, dated November 19, 1889.

Application filed May 25, 1885. Serial No. 166,579. (No model.)

To all whom it may concern:

Be it known that we, EDWARD HOLMEs and BRITAIN HOLMES, citizens of theUnited States, residing at Bu ifalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Stave-Jointing Machines, of which the following is a specification.

The object of our invention is to produce the means for jointing both sides of a stave to the proper bevel and bilge in proportion to its width, and at the same time making both ends of the stave of exactly the same width, before taking it from the machine, all of which will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is a front elevation. Fig. 2 is a Vertical cross-section, a portion being left off to show the other parts more clearly. Fig. 3 is a perspective view. Fig. 4 is a portion of one of the frames, showing the form of the opening through which the shaft passes. Fig. 5 is a side elevation. Fig. 6 is a detached side elevation of the stave-holding device. Fig. 7 is a top view of a portion of the same. Fig.8 is an enlarged cross-section through one of the adjustable slide-bars.

In said drawings, a represents the frame of the machine. It is usually made of cast-iron as being the best material for the purpose, and is provided with caps secured by bolts. Each side of each frame is provided with a grooved slideway a, into which is fitted the gates a a To the lower parts of the gates are secured connecting rods or bars a by pins or bolts a. The opposite ends of these connecting-rods are connected to rocking bars a a by pins 1), both rocking bars being rigidly fastened to the shaft a The rocking bar a? at the front of the machine is made longer than the back one a, so as to receive the footsteps b b which are jointed by the pins 0 to the back parts of the machine. (See Figs. 1, 2, and 5.) The footsteps are jointed by links 1) b and pins U to the ends of the rocking bar of, and to the gates a a are secured the cutters b b by bolts 0. The grooved slideways a are madeadjustable by means of the bolts or set-screws 0', (shown in Figs. 1 and 2,) so that the cutters may be adjusted up to the {jointed by a pin 6 to the hand-lever e stave-rest when required, the construction of this portion of the mechanism being such that when one cutter moves down the other will move up; but they maybe constructed to move together or independently, if desired.

To each side of the machine is secured by bolts 0 a cross-plate c (See Figs. 1, 2, 3, and 5.) To these cross-plates is secured the adjustable steel plates upon which the stave rests while being on t. The edges of the cutters pass close to the edge of these plates while cutting or while in operation. They are secured to the plates 0 by the bolts 0 as above mentioned, and can swing a little on said bolts. Their opposite ends are made adjustable by means of the slots 0 and bolts 0 (See 5.) The mechanism for grasping and holding the stave is placed 011 the shaft d.

d d are two vertical arms rigidly secured to the shaft (1. To the arm d is a stationary clamping or holding device (1 secured thereto by a bolt The arm (Z is provided with a movable clamping-bar (l jointed thereto by a pin (1 (See Fig. 6.) Its upper end isjointed by a pin (1 to a connecting rod or bar e,.the opposite end of which connecting-bar is The lower end of this hand-lever is jointed by a pin 6 to the shaft d, thereby allowing it to swing on said pin and have a lateral motion also, so as to make the arms (1' d swing back and forth toward the cutters Z) or b To the upper port-ion of the arm (1 (see Fig. (3) is jointed a bar 6 by a pin 6 The opposite end of the bar is jointed to a bar 6 by a pin 9 and its opposite end is secured to the arm (1' by a pin f, which passes through a slot or a long narrow opening f, the object being to allow the required longitudinal movement to permit the bars e c to operate. To one of the bars 6" or e is a downwardly-projecting ear f, to which is secured a toggle-joint f f secured together by pins f f and to the shaft d by a pin f to a screw f which passes through the shaft d and is secured bynuts g. To the toggle-joint is secured a connecting arm or rod g, having its opposite end secured to the arm 6 by a pin c. Two short angleplates 9 are secured to the arm 6 by the pin or bolt 8 the object being to prevent the stave from tipping to either side when placed upon the bars to be caught by the clampingbars (1 and d. The shaft (Z passes through the sides of the frame a through an opening 9 substantially in the form shown. (See Fig. 4.) It is supported in boxes g one on each side of the frame, which boxes rest upon spiral springs g, the springs resting in the receiving portion g". (See Fig. 2.) By this means the shaft (Z has a slight motion downward either toward g or 9 To the shaft d is also secured two downwardly-projecting arms h h, fitted loosely to the shaft and having two bars 7L2 7:. jointed thereto by pins 7& 7r". (See Fig. 5.) These two bars are jointed together in the center by a pin hf, and their opposite ends are jointed to the projecting pieces 7L7 by pins i, which pieces are rigidly fastened to the sides of the frame. The ob ject of this construction is to keep the shaft (1 at all times in a horizontal position while being moved downward, whether the pressure be at one end or the other of the shaft.

To prevent the shaft and its clamping and supporting mechanism for the stave from moving loosely to one side or the other or toward the cutters b or Z) a friction mechanism is used, as follows: Through the arms d (Z are slots or openings 1" '5 (See Fig. 6.) Into the opening 1' in arms (1 (Z are jointed two bars 2' 2' (see Fig. 1, and also Fig. 5,) the bar 1' having a portion of larger diameter 1 and the bar i a portion of smaller diameter 17. (Shown in Fig. 1.)

i represents aclamping bar or lever. It is jointed to the frame of the machine by a pin j. At its lower end is a set-screw j and a spiral springj? (Shown in Fig. 5.) The opposite side of the machine is also provided with a clamping bar or lever j, secured to the frame by a pin j. Its upper portion is provided with a horizontal rod connected to it by a pin j, and to the top of the frame at the opposite side by a loop j, where it termimates in a handle 7' placed just opposite the handle on the arm e The opposite side of the machine is also provided with two bars 70 111 having enlarged and small portions, the same as the bars i and they are attached to the bar (1' in the same way as the others are attached to the arm or bar (1 The obj ect of this mechanism is to provide'the means for clamping the bars with'sufficient force to hold the arm or lever e rigidly at any point to which it maybe moved toward either of them together.

the cutters Uor by simply grasping the two handles j and it by the hand and drawing From this construction it will be seen that when the large portion of the bars and 70 are clamped between the clamping-bars i and 7' and the bearing-plates on the frame, (shown in Fig. 5,) the arm 0 and its connecting mechanism will be held securely when moved over toward the cutter b and that when'moved over toward the opposite eutterb it will be held in a similar manner by the bars 1 and The spiral spring 7' (shown in Fig. 5) is in tended to press the arm i against the bars 1 t with sufficient force to prevent the arm and its connecting mechanism from falling or swinging toward either side when moved to any point and left standing. It will be noticed that when the edge of the stave is brought under the cutter I) (see Fig. 2) the larger portion of the bar 1' is caught by the clampingbar i and when j and 7c are forced toward each other it is strongly clamped, and the stave is held in that position; but when moved to the opposite side, so as to bring the stave under the cutter b, the large portion of the bar i is clamped and held by the lever 1', thereby holding the stave in that position until cut.

By releasing the pressure of the handles 7 and 7c toward each other the parts are released, and the stave and its holding mechanism may be readily moved from one side to the other.

During the operation of cutting a stave the cutter forces the stave down onto the staverest, and in moving down it moves at the same angle at which the stave is cut and forces the shaft (1 down in the same direction against the spring 9 so that the force of the spring causes it to rise again as soon as the pressure is'taken off. The shape of the openings through which the shaft d passes allows it to move down, as above mentioned; hence the openings must be of such form as to permit it to move from side toside, as well as downward, as above described.

ZZ represent the ordinary caps and bolts for the frame.

The operation of the invention is as follows: The arm e is moved to a point about midway between the two cutters b b", and it is then drawn out into the position shown by the dotted lines m. (See Figs. 5 and 6.) The end of the stave is now shoved under the clamp d and laid down on bars 6 e,- which are nearly in a line with each other, as shown by the dotted lines m in Fig. 6. The clamp d is also up in the position shown in dotted 1 lines 0 in Fig. 5, and the stave lies in the position shown by the dotted lines m in Fig.

7. A movement of the lever 6 forward, as shown in Figs. 5 and 6, operates the togglejoint and clamp (1 (shown in said Fig. 6) and forces the ends of the bars e 6 up against the center of the stave m and the clamp (Z down on its end and bends it, as shown in Fig. 6, into the form it will have while in a barrel, or nearly so. The arm or lever e is now moved until one edge of the stave is over the rest 0 as shown by the dotted lines m in Fig. 2. The footstep b is now brought down and joints or cuts that side'of the stave.

The arm c may now be moved to the other side and the operation repeated, so that the other side of the stave is jointed in the same way, and the stave being rigidly held until both sides are out it will be seen that both ends of the stave will be exactly the same width.

We claim as our invention- 1. In a stave-jointing machine, two sliding gates set in guideways at the required angle to cut the proper bevel, each carrying a stavejointer knife or knives, and the stave-rests, in combination with an oscillating stave-carrier, mechanism for grasping, bending, and carrying the stave from side to side to be out, and a footstep and its connecting-bars for operating it, as described.

2. In a stave-jointing machine, mechanism for grasping, bending, and carrying the stave from side to side to be cut, in combination with the pivoted bar f, having an enlarged portion, the pivoted bar 2' having a reduced portion, a clamping-bar provided with a handle 7;, a handle j having a rod connecting with a clamping-lever at the opposite end of the machine, and pivoted bars k 7: one having an enlarged and the other a reduced portion for holding the arm 6 and staveholding mechanism rigidly at any point to which it may he moved to or from either of the cutters, substantially as described.

3. In a stave-jointing machine, the supporting-frame having triangular openings through which the ends of the shaft (Z pass, in combination with the shaft (Z, and the mechanism for grasping and holding the stave, mounted upon and carried by said shaft, and springs upon which the shaft (1 rests for holding it and the grasping and holding mechanism up to their normal position with a yielding force, whereby the shaft d and stave grasping and holding mechanism are allowed a slight yielding movement downward in either direction the cut may be made, as described.

4. In a stave-jointing machine, the grasping and holding mechanism consisting of the lever 6 connecting-bar e, and clamping-bars (Z d, pivoted to the arms d (Z upon the shaft (1, in combination with the stave-bending mechanism consisting of the bars e e, pivoted together and having their opposite ends pivoted to the arms d (1 one having a slot f to permit a slight longitudinal movement of the bar 6 on the pin f, a toggle-joint connecting with said bars at the top and to the shaft (1 at the bottom, and having a bar g, connecting the toggle-joint with the arm or lever e the whole combined for joint operation in grasping, bending, and holding the stave, substantially as described.

EDVARD HOLMES. BRITAIN HOLMES.

lVitnesses:

JENNIE M. CALDWELL, JAMES SANGSTER. 

